Sloda New Laptop Battery for Apple A1321 A1286 (Only for 2009 2010 Version) Unibody Macbook Pro 15'', Fits Mb985 Mb986j/a Mc118 [Li-polymer 6-cell 66Wh 6000mah] Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Operation time for standard batteries(6-cell, 66WH 6000mAh): Around 2 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Battery type: Li-Polymer; Capacity:66Wh; Cells: 6-cell; Voltage: 10.95V. CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support, 8-hr x 5-weekday call support.